Open AccessDisentangling decaying isomers and searching for signatures of collective excitations in β decay
Author(s) -
V. Guadilla,
M. Fallot,
A. Algora,
J. L. Taı́n,
J. Agramunt,
J. Äystö,
J. A. Briz,
A. Cucoanes,
T. Eronen,
M. Estienne,
L. M. Fraile,
E. Ganioğlu,
W. Gelletly,
D. Gorelov,
J. Hakala,
A. Jokinen,
D. Jordán,
A. Kankainen,
V. S. Kolhinen,
J. Koponen,
M. Lebois,
Loïc Le Meur,
T. Martínez,
M. Monserrate,
A. Montaner-Pizá,
Iain Moore,
E. Nácher,
S. E. A. Orrigo,
H. Penttilä,
I. Pohjalainen,
A. Porta,
Juuso Reinikainen,
M. Reponen,
S. RintaAntila,
B. Rubio,
K. Rytkönen,
T. Shiba,
Volker Sonnenschein,
A. A. Sonzogni,
E. Valencia,
V. Vedia,
A. Voss,
J. N. Wilson,
A.-A. Zakari-Issoufou
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1643/1/012134
Subject(s) - excited state , atomic physics , physics , dipole , spectroscopy , neutron , nuclear physics , ion , isotope , quantum mechanics
In this contribution we summarize the recent study of the β decay of neutron-rich nuclei with isomeric states close in energy to the ground states. The disentanglement of each pair of β -decaying states was achieved by applying different strategies and using the purification capabilities of the JYFLTRAP double Penning trap system at the Ion Guide Isotope Separator On-Line facility in Jyväskylä. The Total Absorption γ -ray Spectroscopy technique was employed to determine the β intensity probabilities populating the excited states in the daughter nuclei. Previously undetected β intensity was found and we have already evaluated the impact of part of these results on reactor summation calculations. The possibility to populate states associated with the Pygmy Dipole Resonance in the β decay of 96gs Y has also been investigated thanks to the sensitivity of our technique to high-lying strength in the daughter nuclei.